'display list of days in a week in Rails using Date::DAYNAMES

I'm having trouble displaying a list of days in a week in a form.

<%= form_for [@hourable, @hour] do |f| %>

  <% days = []
  Date::DAYNAMES.each_with_index { |x, i| days << [x, i] } %>

  <% days.each_with_index do |day,index| %>

  <div class="field">
    <%= f.check_box day[0] %>
  </div>

  <% end %>   

  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

I'm getting error 

undefined method `Sunday' for #<Hour:0x007fe13c764010>

But if I just display

<%= day[0] %>, it will give me a list Sunday, Monday, Tuesday, etc... to Saturday

What am I doing wrong here?

Thanks

ruby-on-railsrubyruby-on-rails-3.2


Solution 1:[1]

Replace

<% days = []
 Date::DAYNAMES.each_with_index { |x, i| days << [x, i] } %>

<% days.each_with_index do |day,index| %>

<div class="field">
 <%= f.check_box day[0] %>
</div>

With

 <%= f.label :FIELD_NAME%>
<% Date::DAYNAMES.each do |day| %>
  <%= f.check_box :FIELD_NAME, {}, day %>
  <%= day %>
<% end %>

Solution 2:[2]

The issue here is calling each_with_index on days, since days is an array of arrays the way you've constructed it, where each element has the form [dayname, index].

Instead of building up days, you can work off of the DAYNAMES array directly, or replace days.each_with_index with just days.each do |x, i| (but personally I think this is extraneous).

Also see http://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html#method-i-select_day and Rails non-table drop down list if you're not tied to checkboxes.

Sources

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Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Community

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